Questions tagged [rust-wasm]
121 questions
2
votes
0 answers
How to use Reference Types with wasm-bindgen
First of all, I'm newby in rust and webassembly. I'd like to use Reference Types with wasm-bindgen, following theexample in wasm-bindgen book Support for Reference Types
I've tried to build my code with the reference types flag
wasm-pack build…
Daní
- 355
- 1
- 17
2
votes
2 answers
Rust wasm attatch input event listener to element
How do I add an input event listener to an HtmlInputElement/HtmlTextAreaElement. I'm using web-sys and read this, but following that, all the elements I use inside the closure (in this case especially the input element) get moved into the closure…
Elias
- 3,592
- 2
- 19
- 42
2
votes
1 answer
How can I enable --gc-targets in my Cargo.toml?
According to the archival notice in wasm-gc,
The wasm-pack (and wasm-bindgen) project will already run [--gc-targets] by default for you, so there's no need to run it again.
How do we specify this in Cargo.toml explictly?
Evan Carroll
- 78,363
- 46
- 261
- 468
2
votes
0 answers
how to correctly import js script from wasm rust
How do you let webpack know that a chunk is used inside of rust/wasm so that it doesn't get discarded.
My try:
webpack config:
module.exports: {
...
entry: {
main: './index.js',
worker: './worker.js'
},
output: {
…
Mattia
- 179
- 15
2
votes
1 answer
Rust Wasm Bindgen returns object but gets a number
today while doing some rust wasm vs js speed benchmarking with wasm-bindgen, I ran into a problem.
I had made a simple struct as you can see here:
I used this struct in a simple function called gimmeDirections
as shown here:
After compiling this…
Artrix
- 149
- 10
2
votes
1 answer
Returning more than one value in a function of near protocol contract
I am trying to return two variables in near protocol smart contract
pub fn get_product(&self, product_id: u128) -> (String, bool) {
let product = self.product_map.get(&product_id).unwrap();
(product.product_details_hash,…
Amiya Behera
- 2,210
- 19
- 32
2
votes
1 answer
How to handle exceptions in NEAR cross contract calls?
How can I catch and handle an exception in a chain of async call between contracts?
Suppose, that my transaction initiate the following calls:
contractA.run()
-> do changes in contractA
-> calls contractB.run()
-> do changes in contractB
…
Robert Zaremba
- 8,081
- 7
- 47
- 78
2
votes
2 answers
How to create a JS array of Strings from Rust using web_sys?
I am trying to use a Web API that contains a method which accepts an array of strings from Rust.
I am using web_sys to "talk" to the JS API, but I can't find a way to pass in an array of static Strings into it.
In Rust, unfortunately, the type of…
Renato
- 12,940
- 3
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- 85
2
votes
1 answer
Getting query string from Window object in WebAssembly in Rust
Context: I am learning Rust & WebAssembly and as a practice exercise I have a project that paints stuff in HTML Canvas from Rust code. I want to get the query string from the web request and from there the code can decide which drawing function to…
Matthew Nichols
- 4,866
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1
vote
0 answers
In Yew, how is it possible to locate index.html in a static/ directory?
I have something going wrong with my Yew App. I try to locate index.html inside the static/ and, I have this in my Trunk.toml file:
[build]
target = "./static/index.html"
And ultimately, my app compiles with a warning which is "no rust project…
DrShahinstein
- 11
- 2
1
vote
1 answer
Calling a WASM function that returns a string from Wasmtime
At a high level I am trying to create a Rust host program that loads a WASM module at runtime using Wasmtime and calls a WASM function that returns a string. I can get this working with numeric types such as usize, but can't work out how to handle…
Keith Sharp
- 21
- 4
1
vote
1 answer
How to compile Rust for use with WASM's Shared Memory?
When I run a loop in different Web Workers, the loop shares the counter variable across threads despite that the variable should be thread-local. It should not do this, but I don't know how to fix it.
The offending loop is in the run function, as…
DDR
- 392
- 1
- 4
- 14
1
vote
1 answer
can't make new project with wasm-pack new myProjectName
ewmacfarland@Erics-MacBook-Air wasm-crypto % wasm-pack new crypto
Error: expected value at line 1 column 1
Caused by: expected value at line 1 column 1
tried un and reinstalling it every way i could
run on M1 chip
Eric MacFarland
- 13
- 3
1
vote
1 answer
How to publish a library for both browser and Node using wasm-pack?
I'm writing a wasm library that I want to be available in both the browser and Node. Does this mean I need to run both wasm-pack publish -t bundler and wasm-pack publish -t node? Is there a way to publish both builds under the same package instead…
KevinH
- 586
- 1
- 8
- 12
1
vote
1 answer
Output Array TypeScript type using wasm_bindgen on Rust struct field with type Vec
In the project_wasm.d.ts below, I'm trying to output Array instead of the Array coming from js_sys::Array - but can't figure out the correct wasm_bindgen syntax or getter function. The calling TypeScript/NodeJS code works, but I want…
Kevin Hakanson
- 41,386
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